<template>
  <view>
    <!-- 使用自定义的搜索组件 -->
    <mysearch @click="gotoSearch"></mysearch>
    <view class="scroll-view-container">
      <!-- 左侧的滚动视图区域 -->
      <scroll-view class="left-scroll-view" scroll-y :style="{height: wh + 'px'}">
        <block v-for="(item,i) in cateList" :key = "i">
          <view :class="['left-scroll-view-item', i == active ? 'active' : '']" @click="activeChanged(i)">
            {{item.cat_name}}
          </view>
        </block>
      </scroll-view>
      <!-- 右侧的滚动视图区域 -->
      <scroll-view class="right-scroll-view" scroll-y :style="{height: wh + 'px'}" :scroll-top="scrollTop">
        <view class="cate-lv2" v-for="(item2, i2) in cateLevel2" :key="i2">
          <!-- 二级分类的标题 -->
          <view class="cate-lv2-title">/ {{item2.cat_name}} /</view>
          <!-- 当前二级分类下的三级分类列表 -->
          <view class="cate-lv3-list">
            <!-- 三级分类的item项 -->
            <view class="cate-lv3-item" v-for="(item3, i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
              <!-- 三级分类的图片 -->
              <image :src="item3.cat_icon.replace('dev','web')"></image>
              <!-- 三级分类的文本 -->
              <text>{{item3.cat_name}}</text>
            </view>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
export default {
  data() {
    return {
      wh: 0,
      cateList: [],
      active: 0,
      cateLevel2: [],
      scrollTop: 0
    };
  },
  onLoad() {
    const sysInfo = uni.getSystemInfoSync()
    this.wh = sysInfo.windowHeight
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await uni.$http.get('/api/public/v1/categories')
      if (res.meta.status !== 200) return uni.$showMsg()
      
      // 过滤掉第二个分类（索引为1）
      this.cateList = res.message.filter((item, index) => index !== 1)
      
      // 初始化二级分类（使用过滤后的第一个分类）
      if (this.cateList.length > 0) {
        this.cateLevel2 = this.cateList[0].children
      }
    },
    activeChanged(i) {
      this.active = i
      // 使用过滤后的分类数据
      this.cateLevel2 = this.cateList[i].children
      
      this.scrollTop = this.scrollTop == 0 ? 1 : 0
    },
    //点击三级分类项跳转到商品列表页面
    gotoGoodsList(item3) {
      uni.navigateTo({
        url: '/subpkg/good_list/good_list?cid=' + item3.cat_id
      })
    },
    gotoSearch() {
      uni.navigateTo({
        url: '/subpkg/search/search'
      })
    }
  }
}
</script>

<!-- 样式部分保持不变 -->
<style lang="scss">
.scroll-view-container {
  display: flex;

  .left-scroll-view {
    width: 120px;

    .left-scroll-view-item {
      line-height: 60px;
      background-color: #f7f7f7;
      text-align: center;
      font-size: 12px;

      &.active {
        background-color: #ffffff;
        position: relative;

        &::before {
          content: ' ';
          display: block;
          width: 3px;
          height: 30px;
          background-color: #c00000;
          position: absolute;
          left: 0;
          top: 50%;
          transform: translateY(-50%);
        }
      }
    }
  }
}

.cate-lv2-title {
  font-size: 12px;
  font-weight: bold;
  text-align: center;
  padding: 15px 0;
}

.cate-lv3-list {
  display: flex;
  flex-wrap: wrap;

  .cate-lv3-item {
    width: 33.33%;
    margin-bottom: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;

    image {
      width: 60px;
      height: 60px;
    }

    text {
      font-size: 12px;
    }
  }
}
</style>